When crop dusting does NOT work:
1. on a treadmill (no matter how fast you walk or run)
2. with a strong tail wind
3. with a turnaround - for example, you crop dust while walking with your girlfriend, then she turns around and walks back to look at a display in a storefront window.

During the winter weather months and dry road salt powder has accumilated on the shoulder of the interstate. If you are a truck driver, you can guide your trailer off and on the shoulder to get them pesky cars or other tailgaters off of your ass!!

The act of starting at one end of a person-filled room, ripping a nasty fart (the "thick" ones are better, as they cling more), then moving briskly to the other end of the room, staying ahead of your own stench, yet "dusting" the rest of the room with your flatulence.

I quickly went out the door to avoid blame after cropdusting the room.